It is an important nutrient in plant metabolism, as it participates in numerous biochemical reactions such as respiration and energy transformation, as well as in various organic compounds, in addition to participating in the constitution of enzymes, which in the case of apple trees can translate into stimulation of the early formation of roots, fast and vigorous plant growth and good flowering.
Deficiency – Upward bending of younger leaves and later older ones. These showed a lighter green color in relation to the others and rough to the touch.
Reddening of the veins and petioles may occur as initial symptoms and small, narrow leaves later.
